JP2004156539A - Multiple stage compression rotary compressor - Google Patents

Multiple stage compression rotary compressor Download PDF

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Publication number
JP2004156539A
JP2004156539A JP2002323244A JP2002323244A JP2004156539A JP 2004156539 A JP2004156539 A JP 2004156539A JP 2002323244 A JP2002323244 A JP 2002323244A JP 2002323244 A JP2002323244 A JP 2002323244A JP 2004156539 A JP2004156539 A JP 2004156539A
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refrigerant
rotary
cylinder
element
rotary compression
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JP2002323244A
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Japanese (ja)
Inventor
Kazuaki Fujiwara
Akifumi Fuuka
Kenzo Matsumoto
Kazuya Sato
Kentaro Yamaguchi
Masaji Yamanaka
Haruhisa Yamazaki
明文 富宇加
正司 山中
賢太郎 山口
晴久 山崎
兼三 松本
一昭 藤原
里  和哉
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Sanyo Electric Co Ltd
三洋電機株式会社
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F04C18/3562Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
    • F04C18/3564Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008Hermetic pumps

Abstract

PROBLEM TO BE SOLVED: To secure the pressure resistance of a closed vessel between refrigerant introduction pipes connected to the first and second cylinders while reducing the entire size, in a so-called internal intermediate pressure type multiple stage compression rotary compressor.
SOLUTION: The rotary compressor 10 with upper and lower cylinders 38 and 40 has a lower supporting member 56 for closing the opening of the lower cylinder 40 and an upper supporting member 54 for closing the opening of the upper cylinder 38. A refrigerant introduction pipe 94 for introducing refrigerant to the inlet side of the first rotary compression element 32 is connected to correspond to the lower cylinder 40. A refrigerant introduction pipe 92 for introducing refrigerant to the inlet side of the second rotary compression element 34 is connected to correspond to the upper supporting member 54.
COPYRIGHT: (C)2004,JPO

Description

【0001】 [0001]
【発明の属する技術分野】 BACKGROUND OF THE INVENTION
本発明は、密閉容器内に駆動要素と、この駆動要素にて駆動される第1及び第2の回転圧縮要素を設け、第1の回転圧縮要素で圧縮された冷媒を密閉容器内に吐出し、更にこの吐出された中間圧の冷媒を第2の回転圧縮要素で圧縮する多段圧縮式ロータリコンプレッサに関するものである。 The present invention includes a driving element in a sealed container, the first and second rotary compression elements driven by this driving element provided discharges refrigerant compressed by the first rotary compression element into the sealed container relates multistage compression rotary compressor to further compress the refrigerant in the discharged intermediate pressure by the second rotary compression element.
【0002】 [0002]
【従来の技術】 BACKGROUND OF THE INVENTION
従来のこの種多段圧縮式ロータリコンプレッサ、特に、内部中間圧型多段(二段)圧縮式のロータリコンプレッサでは、下側に設けられた第1の回転圧縮要素の吸込ポートから冷媒ガスが下シリンダの低圧室側に吸入され、ローラとベーンの動作により圧縮されて中間圧となり下シリンダの高圧室側より吐出ポート、吐出消音室を経て密閉容器内に吐出される。 Conventional this type multistage compression rotary compressor, in particular, the internal intermediate pressure type multistage (two-stage) In the compression type rotary compressor, a low pressure of the first refrigerant gas from the suction port is lower cylinder rotary compression elements provided on the lower side is sucked into the chamber side, the discharge port from the high pressure chamber side of it under the cylinder and is compressed by the intermediate pressure by the operation of the roller and the vane, and is discharged into the sealed container through the discharge muffling chamber. そして、この密閉容器内の中間圧の冷媒ガスは上側に設けられた第2の回転圧縮要素の吸込ポートから上シリンダの低圧室側に吸入され、ローラとベーンの動作により2段目の圧縮が行われて高温高圧の冷媒ガスとなり、高圧室側より吐出ポート、吐出消音室を経て放熱器に流入し、そこで放熱作用を発揮した後、膨張弁で絞られて蒸発器で吸熱し、第1の回転圧縮要素に吸入されるサイクルを繰り返す。 Then, the refrigerant gas of intermediate pressure in the sealed container is sucked into the low pressure chamber side of the upper cylinder from the suction port of the second rotary compression element provided on the upper side, by the operation of the roller and the vane of the second-stage compression done to become a high-temperature high-pressure refrigerant gas, the discharge port from the high pressure chamber side, flows into the radiator through the discharge muffling chamber, where after exhibiting the heat radiation effect, absorbs heat in throttled by the evaporator expansion valve, the first repeat the cycle drawn into the rotary compression elements.
【0003】 [0003]
係るロータリコンプレッサに、高低圧差の大きい冷媒、例えば炭酸ガスの一例としての二酸化炭素(CO2)を冷媒として用いた場合、冷媒圧力は低段側となる第1の回転圧縮要素では8MPaG(中間圧)、高段側となる第2の回転圧縮要素で12MPaGの高圧となる。 A rotary compressor according, large refrigerant high-low pressure difference, for example, when carbon dioxide (CO2) as an example of carbon dioxide gas used as the refrigerant, 8 MPaG in the first rotary compression element refrigerant pressure to be the low-stage side (intermediate pressure) , and the high-pressure 12MPaG in the second rotary compression element becomes higher stage.
【0004】 [0004]
しかし、二酸化炭素冷媒は従来のフロン系冷媒に比較して、ガス密度が高いことから冷媒の体積流量が小さくても充分な冷凍能力が得られる。 However, the carbon dioxide refrigerant as compared to the conventional fluorocarbon refrigerant, sufficient cooling capacity can be obtained even if small volumetric flow rate of the refrigerant from that gas density is high. 即ち、通常の能力の圧縮機であれば排除容積を小さくすることが可能となるが、その場合、シリンダの内径を縮小することは圧縮効率の低下を招くため、シリンダの厚さを薄くしていくかたちとなる。 That is, it is possible to reduce the displacement volume if the ordinary skill compressor, in which case, reducing the inner diameter of the cylinder for lowering the compression efficiency, has the thickness of the cylinder the molding.
【0005】 [0005]
しかしながら、シリンダの厚さを薄くすると、今度は各シリンダの吸込側に冷媒を導入するための冷媒導入管(冷媒吐出管も同様)を接続できなくなるため、従来では上シリンダの上側の開口面及び下シリンダの下側の開口面を閉塞して回転軸の軸受けを兼用する上部支持部材及び下部支持部材に冷媒導入管を接続し、各支持部材内を経て各シリンダに冷媒を導入するようにしていた(特許文献1参照)。 However, when the thickness of the cylinder, because now no longer able to connect the refrigerant introduction pipe for introducing the refrigerant to the suction side of each cylinder (refrigerant discharge pipe as well), the opening face and the upper upper cylinder in the conventional We try to connect the refrigerant introducing pipe into the upper support member and lower support member also serves as a bearing for the rotary shaft to close the lower open surface of the lower cylinder to introduce refrigerant into each through the respective support members cylinder It was (see Patent Document 1).
【0006】 [0006]
【特許文献1】 [Patent Document 1]
特開2001−82369号公報(第7頁、第8頁参照)。 JP 2001-82369 JP (page 7, see page 8).
【0007】 [0007]
【発明が解決しようとする課題】 [Problems that the Invention is to Solve
一方、上述よりも能力の大きい圧縮機の場合にはシリンダの厚さ寸法も冷媒配管を接続可能な程厚くして用いることになる。 On the other hand, the thickness of the cylinder also be used in thick enough can be connected to the refrigerant pipe in the case of a large compressor capacity than described above. そのため、前述とは異なり、支持部材を介さずに、第1及び第2の回転圧縮要素を構成する上下のシリンダに冷媒導入管を接続することが可能となるが、今度は上下の冷媒導入管の距離が近接してしまうため、配管接続箇所の間の密閉容器の耐圧強度(上述した8MPaG)が確保できなくなる問題が生じる。 Therefore, unlike the above, without using the support member, although it is possible to connect the refrigerant introducing pipe above and below the cylinder constituting the first and second rotary compression elements, the refrigerant inlet pipe is now vertical the distance will close, problems compressive strength of the sealed container (8 MPaG described above) can not be secured between the pipe connection points occur.
【0008】 [0008]
本発明は、係る従来技術の課題を解決するために成されたものであり、所謂内部中間圧型の多段圧縮式ロータリコンプレッサにおいて、第1及び第2のシリンダに接続される冷媒導入管の間の密閉容器の耐圧強度を確保し、且つ、全体寸法の縮小も図ることを目的とする。 The present invention has been made to solve the prior art problems relating, in a multistage compression type rotary compressor of so-called internal intermediate pressure type, between the refrigerant introducing pipe connected to the first and second cylinders ensuring the pressure strength of the sealed container, and aims to achieve also reduced overall dimensions.
【0009】 [0009]
【課題を解決するための手段】 In order to solve the problems]
即ち、請求項1の発明の多段圧縮式ロータリコンプレッサは、密閉容器内に駆動要素と、この駆動要素にて駆動される第1及び第2の回転圧縮要素を備え、第1の回転圧縮要素で圧縮された冷媒を密閉容器内に吐出し、更にこの吐出された中間圧の冷媒を第2の回転圧縮要素で圧縮するものであって、第1及び第2の回転圧縮要素をそれぞれ構成するための第1及び第2のシリンダと、これらシリンダ間に介在して各回転圧縮要素を仕切ると共に、各回転圧縮要素の一方の開口面を閉塞する中間仕切板と、第1のシリンダの他方の開口面を閉塞し、駆動要素の回転軸の一方の軸受けを有する第1の支持部材と、第2のシリンダの他方の開口面を閉塞し、駆動要素の回転軸の他方の軸受けを有する第2の支持部材とを備え、第1の回転圧縮要素 That is, multi-stage compression type rotary compressor of the first aspect of the present invention includes a driving element in a sealed container, comprising first and second rotary compression elements driven by this driving element, by the first rotary compression element discharging the compressed refrigerant into the sealed container, further refrigerant in the discharged intermediate pressure be one that compressed by the second rotary compression element, for forming the first and second rotary compression elements, respectively first and second cylinders, with interposed between the cylinders to partition each rotary compression element, a partition plate in which closes the one open face of each rotary compression element, the other opening of the first cylinder closing the surface, a first support member having one of the bearing of the rotary shaft of the driving element, the other opening face of the second cylinder closed, the drive element rotating shaft second with the other bearing of and a support member, the first rotary compression element 吸込側に冷媒を導入する第1の冷媒導入管を前記第1のシリンダに対応して接続し、第2の回転圧縮要素の吸込側に冷媒を導入する第2の冷媒導入管を第2の支持部材に対応して接続したものである。 A first refrigerant introduction pipe for introducing the refrigerant in response to the first cylinder is connected to the suction side, the second refrigerant introduction pipe for introducing the refrigerant to the suction side of the second rotary compression element of the second which are connected in correspondence with the support member.
【0010】 [0010]
また、請求項2の発明の多段圧縮式ロータリコンプレッサは、密閉容器内に駆動要素と、この駆動要素にて駆動される第1及び第2の回転圧縮要素を備え、第1の回転圧縮要素で圧縮された冷媒を密閉容器内に吐出し、更にこの吐出された中間圧の冷媒を第2の回転圧縮要素で圧縮するものであって、第1及び第2の回転圧縮要素をそれぞれ構成するための第1及び第2のシリンダと、これらシリンダ間に介在して各回転圧縮要素を仕切ると共に、各回転圧縮要素の一方の開口面を閉塞する中間仕切板と、第1のシリンダの他方の開口面を閉塞し、駆動要素の回転軸の一方の軸受けを有する第1の支持部材と、第2のシリンダの他方の開口面を閉塞し、駆動要素の回転軸の他方の軸受けを有する第2の支持部材とを備え、第1の回転圧縮要素 Also, the multistage compression type rotary compressor of a second invention, a driving element in a sealed container, comprising first and second rotary compression elements driven by this driving element, by the first rotary compression element discharging the compressed refrigerant into the sealed container, further refrigerant in the discharged intermediate pressure be one that compressed by the second rotary compression element, for forming the first and second rotary compression elements, respectively first and second cylinders, with interposed between the cylinders to partition each rotary compression element, a partition plate in which closes the one open face of each rotary compression element, the other opening of the first cylinder closing the surface, a first support member having one of the bearing of the rotary shaft of the driving element, the other opening face of the second cylinder closed, the drive element rotating shaft second with the other bearing of and a support member, the first rotary compression element 吸込側に冷媒を導入する第1の冷媒導入管を第1の支持部材に対応して接続し、第2の回転圧縮要素の吸込側に冷媒を導入する第2の冷媒導入管を第2のシリンダに対応して接続したものである。 A first refrigerant introduction pipe for introducing the refrigerant to the suction side and connected corresponding to the first support member, the second refrigerant introduction pipe for introducing the refrigerant to the suction side of the second rotary compression element of the second which are connected in correspondence with the cylinder.
【0011】 [0011]
【発明の実施の形態】 DETAILED DESCRIPTION OF THE INVENTION
次に、図面に基づき本発明の実施形態を詳述する。 Next, detailed embodiments of the present invention based on the drawings. 図1は本発明のロータリコンプレッサ10の実施例として、第1及び第2の回転圧縮要素32、34を備えた内部中間圧型の多段(2段)圧縮式ロータリコンプレッサ10の縦断面図を示している。 1 as an embodiment of the rotary compressor 10 of the present invention, the internal intermediate pressure type multistage (two-stage) with a first and second rotary compression elements 32, 34 shows a longitudinal sectional view of a compression type rotary compressor 10 there.
【0012】 [0012]
この図において、10は二酸化炭素(CO2)を冷媒として使用する内部中間圧型多段(2段)圧縮式のロータリコンプレッサで、このロータリコンプレッサ10は鋼板からなる円筒状の密閉容器12と、この密閉容器12の内部空間の上側に配置収納された駆動要素14及びこの駆動要素14の下側に配置され、駆動要素14の回転軸16により駆動される第1の回転圧縮要素32(1段目)及び第2の回転圧縮要素34(2段目)からなる回転圧縮機構部18にて構成されている。 In this figure, 10 is an internal intermediate pressure type multistage (two-stage) compression type rotary compressor using carbon dioxide (CO2) as a refrigerant, the rotary compressor 10 is a cylindrical sealed container 12 made of steel sheet, the sealed container is disposed below the driving element 14 and the drive element 14 disposed accommodated in the upper internal space 12, the first rotary compression element 32 driven by a rotary shaft 16 of the drive element 14 (first stage) and It is constituted by rotary compression mechanism section 18 composed of the second rotary compression element 34 (second stage).
【0013】 [0013]
密閉容器12は、底部をオイル溜とし、駆動要素14と回転圧縮機構部18を収納する容器本体12Aと、この容器本体12Aの上部開口を閉塞する略椀状のエンドキャップ(蓋体)12Bとで構成され、且つ、このエンドキャップ12Bの上面には駆動要素14に電力を供給するためのターミナル(配線を省略)20が取り付けられている。 Sealed container 12, the bottom and the oil reservoir, and the container body 12A for housing the drive element 14 and the rotary compression mechanism section 18, substantially bowl-shaped end cap (lid) for closing the upper opening of the container main body 12A 12B and in the configuration, and this is the upper surface of the end cap 12B has 20 attached (a wiring line is omitted) terminal for supplying power to the drive element 14.
【0014】 [0014]
駆動要素14は、密閉容器12の上部空間の内周面に沿って環状に取り付けられたステータ22と、このステータ22の内側に若干の間隙を設けて挿入配置されたロータ24とからなる。 Drive element 14 includes a stator 22 attached annularly along an inner peripheral surface of the upper space of the sealed container 12, as insertion arranged rotor 24 which is provided a slight gap inside the stator 22. このロータ24は中心を通り鉛直方向に延びる回転軸16に固定されている。 The rotor 24 is fixed to the rotary shaft 16 extending in the vertical direction through the center.
【0015】 [0015]
ステータ22は、ドーナッツ状の電磁鋼板を積層した積層体26と、この積層体26の歯部に直巻き(集中巻き)方式により巻装されたステータコイル28を有している。 The stator 22 has a laminate 26 formed by laminating donut-shaped electromagnetic steel sheets, the stator coil 28 wound around by a direct winding (concentrated winding) system the tooth portion of the laminate 26. また、ロータ24もステータ22と同様に電磁鋼板の積層体30で形成され、この積層体30内に永久磁石MGを挿入して構成されている。 The rotor 24 is also formed in the laminate 30 similarly electromagnetic steel plates and the stator 22 is constructed by inserting a permanent magnet MG into this laminate 30.
【0016】 [0016]
前記第1の回転圧縮要素32と第2の回転圧縮要素34との間には中間仕切板36が挟持されている。 Partition plate 36 is sandwiched middle between the first rotary compression element 32 and the second rotary compression element 34. 即ち、第1の回転圧縮要素32と第2の回転圧縮要素34は、中間仕切板36と、この中間仕切板36の上下に配置された上シリンダ38(第2のシリンダ)、下シリンダ40(第1のシリンダ)と、この上下シリンダ38、40内を180度の位相差を有して回転軸16に設けた上下偏心部42、44に嵌合されて偏心回転する上下ローラ46、48と、この上下ローラ46、48に当接して上下シリンダ38、40内をそれぞれ低圧室側と高圧室側に区画する上下ベーン(図示せず)と、上シリンダ38の上側の開口面及び下シリンダ40の下側の開口面を閉塞して回転軸16の軸受けを兼用する支持部材としての上部支持部材54(第2の支持部材)及び下部支持部材56(第1の支持部材)にて構成される。 That is, the first rotary compression element 32 and the second rotary compression element 34, the intermediate partition plate 36, on the cylinder 38 arranged above and below the intermediate partition plate 36 (second cylinder), the lower cylinder 40 ( a first cylinder), and the upper and lower rollers 46 and 48 to the eccentric rotation up or down cylinder 38, 40 with a phase difference of 180 degrees is fitted to the upper and lower eccentric portions 42 and 44 provided on the rotary shaft 16 , upper and lower vanes for partitioning the vertically rollers 46 contact with the upper and lower cylinders 38 and 40 into the low pressure chamber side and a high pressure chamber side, respectively (not shown), the upper opening surface and the lower cylinder of the upper cylinder 38 40 constituted by upper support member 54 as a supporting member that also serves as a bearing of the closure to the rotary shaft 16 (second support member) and a lower support member 56 (first support member) the lower opening surface of the .
【0017】 [0017]
ここで、ロータリコンプレッサに、高低圧差の大きい冷媒、例えば二酸化炭素(CO2)を冷媒として用いた場合、前述した如き密閉容器12内は通常よりも極めて高い圧力となる。 Here, the rotary compressor, when using large refrigerant high-low pressure difference, for example, carbon dioxide (CO2) as a refrigerant, in such closed container 12 described above is extremely higher pressure than normal. 係る密閉容器12の上下シリンダ38、40に対応する部分に後述する冷媒導入管92、94を接続すると、冷媒導入管92、94の間の距離が小さくなり、その間の密閉容器12の耐圧強度が確保できなくなる。 Connecting refrigerant introduction pipe 92, 94 to be described later in a portion corresponding to the upper and lower cylinders 38 and 40 of the sealed container 12 according the distance between the refrigerant introduction pipe 92, 94 is reduced, the pressure resistance of between the sealed container 12 It can not be secured. そこで、本発明では、冷媒導入管92、94の間の密閉容器12の耐圧強度を確保するため、コンプレッサの寸法拡大を抑えながら冷媒導入管92、94の間隔の拡大を図っている。 Therefore, in the present invention, for securing the pressure resistance of the sealed container 12 between the refrigerant introduction pipes 92, 94 and to expand the distance between the refrigerant introduction pipe 92, 94 while suppressing the size enlargement of the compressor.
【0018】 [0018]
即ち、上部支持部材54に、上シリンダ38に形成された吸込ポート161にて当該上シリンダ38の内部と連通する吸込通路58と、駆動要素14から離間する方向に凹陥した吐出消音室62を形成し、吐出消音室62のシリンダ38とは反対側の開口部を上部カバー66により閉塞する。 That is, the upper support member 54, the suction passage 58 communicating with the interior of the on the cylinder 38 at the suction port 161 formed in the upper cylinder 38, the discharge muffling chamber 62 recessed in a direction away from the drive element 14 formed and an opening on the opposite side blocked by the upper cover 66 and the cylinder 38 of the discharge muffling chamber 62.
【0019】 [0019]
一方、下シリンダ40には下シリンダ40の低圧室側に連通する吸込ポート162を形成すると共に、下シリンダ40の下側の開口(中間仕切板36とは反対側の開口)は通常の下部支持部材56にて閉塞する。 Meanwhile, with the lower cylinder 40 to form a suction port 162 communicating with the low pressure chamber side of the lower cylinder 40, (the opening opposite to the intermediate partition plate 36) below the opening of the lower cylinder 40 is usually of the lower support It is closed by the member 56. 下部支持部材56の下側は、略椀状の通常のマフラーカバー68にて覆い、このマフラーカバー68と下部支持部材56間に吐出消音室64を形成する。 Lower the lower support member 56 is covered by a substantially bowl-shaped conventional muffler cover 68 to form a discharge muffler chamber 64 between the muffler cover 68 and the lower support member 56.
【0020】 [0020]
そして、マフラーカバー68は、周辺部の4カ所を主ボルト129・・・によって下から下部支持部材56に固定し、図示しない吐出ポートにて第1の回転圧縮要素32の下シリンダ40内部と連通する吐出消音室64の下面開口部を閉塞する。 The muffler cover 68 is fixed to the lower support member 56 from below the four locations of the periphery by the main bolts 129 ..., a first lower cylinder 40 communicates with the interior of the rotary compression element 32 at the discharge port (not shown) closing the opening on the bottom of the discharge muffling chamber 64. この主ボルト129・・・の先端は上部支持部材54に螺合する。 The tips of the main bolts 129 ... are screwed to the upper support member 54.
【0021】 [0021]
尚、吐出消音室64と密閉容器12内における上部カバー66の駆動要素14側は、上下シリンダ38、40や中間仕切板36を貫通する図示しない連通路にて連通されている。 The driving element 14 side of the upper cover 66 in the discharge muffling chamber 64 and the closed container 12 are communicated with at communication passage (not shown) extending through the upper and lower cylinders 38 and 40 and the intermediate partition plate 36. 連通路の上端には中間吐出管121が立設されており、この中間吐出管121は密閉容器12内における上部カバー66の駆動要素14側に開口している。 The upper end of the communication passage has an intermediate discharge pipe 121 is erected, the intermediate discharge pipe 121 is open to the driving element 14 side of the upper cover 66 in the closed container 12.
【0022】 [0022]
また、上部カバー66は第2の回転圧縮要素34の上シリンダ38内部と連通する吐出消音室62の上面開口部を閉塞し、密閉容器12内を吐出消音室62と駆動要素14側とに仕切る。 Further, the upper cover 66 closes the upper opening of the discharge muffling chamber 62 which communicates with the interior upper cylinder 38 of the second rotary compression element 34, separating the sealed container 12 to the discharge muffling chamber 62 and the driving element 14 side . この上部カバー66は、周辺部が4本の主ボルト78・・・により、上から上部支持部材54に固定されている。 The upper cover 66, the peripheral portion by the main bolts 78 ... of four, are fixed from above to the upper support member 54. この主ボルト78・・・の先端は下部支持部材56に螺合する。 The tips of the main bolts 78 ... are screwed to the lower support member 56.
【0023】 [0023]
そして、ロータリコンプレッサ10には冷媒としては地球環境にやさしく、可燃性および毒性等を考慮して自然冷媒である前記二酸化炭素(CO2)が使用される。 The environmentally friendly as the refrigerant in the rotary compressor 10, the carbon dioxide (CO2) is used as a natural refrigerant in consideration of flammability and toxicity.
【0024】 [0024]
前記密閉容器12の容器本体12Aの側面には、上部支持部材54の吸込通路58に対応する位置にスリーブ141が溶接固定され、下シリンダ40の吸込ポート162に対応する位置にスリーブ142が溶接固定されると共に、上シリンダ38に対応する位置にスリーブ143が溶接固定されている。 Wherein a side surface of the container main body 12A of the sealed container 12, the sleeve 141 is welded at a position corresponding to the suction passage 58 of the upper support member 54, the sleeve 142 at a position corresponding to the suction port 162 is welded below the cylinder 40 fixed with the sleeve 143 at a position corresponding to the upper cylinder 38 is fixed by welding. これにより、スリーブ141と142間の間隔は、上下シリンダ38、40に対応して各スリーブを取り付ける場合に比して大きくなる。 Thus, the spacing between the sleeve 141 and 142 is larger than the case of mounting each sleeve corresponding to the upper and lower cylinders 38 and 40. これにより、後述する冷媒導入管92、94が接続されることになるスリーブ141と142間の密閉容器12の耐圧強度を確保することができる。 Thus, it is possible to secure the pressure resistance of the sealed container 12 between the sleeves 141 and 142 made in the refrigerant introduction pipe 92, 94 to be described later is connected. また、スリーブ143はスリーブ141の略対角位置にある。 Further, the sleeve 143 is in a substantially diagonal positions of the sleeve 141.
【0025】 [0025]
そして、スリーブ141内には上シリンダ38に冷媒ガスを導入するための冷媒導入管92(第2の冷媒導入管)の一端が挿入接続され、この冷媒導入管92の一端は上シリンダ38の吸込通路58に連通される。 One end of the refrigerant introduction pipe 92 for introducing the refrigerant gas into the upper cylinder 38 (second refrigerant introduction pipe) is inserted into the sleeve 141, one end of the refrigerant introducing pipe 92 is the suction of the upper cylinder 38 It communicates with the passage 58. この冷媒導入管92は密閉容器12の上側を通過してスリーブ141と略90度ずれた位置にあるスリーブ(図示せず)に至り、冷媒導入管92の他端はこのスリーブ内に挿入接続されて密閉容器12内に連通する。 The refrigerant introducing pipe 92 reaches the sleeve (not shown) in the position shifted sleeve 141 approximately 90 degrees through the upper closed container 12, the other end of the refrigerant introduction pipe 92 is inserted and connected in the sleeve communicating with the hermetic vessel 12 Te.
【0026】 [0026]
また、スリーブ142内には下シリンダ40に冷媒ガスを導入するための冷媒導入管94(第1の冷媒導入管)の一端が挿入接続され、この冷媒導入管94の一端は下シリンダ40に形成した吸込ポート162に連通される。 One end of the refrigerant introduction pipe 94 for introducing the refrigerant gas to the lower cylinder 40 (first refrigerant introduction pipe) is inserted into the sleeve 142, one end of the refrigerant introduction pipe 94 is formed below the cylinder 40 communicates with the suction port 162 was. また、スリーブ143内には冷媒吐出管96が挿入接続され、この冷媒吐出管96の一端は上シリンダ38内を経て上部支持部材54内の吐出消音室62に連通される。 Further, the sleeve 143 is inserted and connected the refrigerant discharge pipe 96, one end of the refrigerant discharge pipe 96 is communicated through the inside of the upper cylinder 38 to the discharge muffling chamber 62 in the upper support member 54.
【0027】 [0027]
そして、ターミナル20および図示されない配線を介して駆動要素14のステータコイル28に通電されると、駆動要素14が起動してロータ24が回転する。 When it is energized stator coil 28 of the drive element 14 via the terminal 20 and not shown wiring, the drive element 14 the rotor 24 rotates to start. この回転により回転軸16と一体に設けられ上下偏心部42、44に嵌合された上下ローラ46、48が上下シリンダ38、40内を前述の如く偏心回転する。 The rotated by mated upper and lower rollers 46 and 48 upper and lower eccentric portions 42 and 44 provided integrally with the rotary shaft 16 is the upper and lower cylinders 38 and 40 rotate eccentrically as described above.
【0028】 [0028]
これにより、冷媒導入管94を介して吸込ポート162から下シリンダ40の低圧室側に吸入された低圧の冷媒ガスは、ローラ48とベーンの動作により圧縮されて中間圧となり、下シリンダ40の高圧室側より吐出ポート、下部支持部材56に形成された吐出消音室64から連通路を経て中間吐出管121から密閉容器12内に吐出される。 Thus, low-pressure refrigerant gas sucked from the suction port 162 into the low pressure chamber side of the lower cylinder 40 through the refrigerant introduction pipe 94 is compressed by the operation of the roller 48 and the vane to become a middle pressure, high pressure of the lower cylinder 40 chamber side of the discharge port, is discharged from the intermediate discharging pipe 121 into the sealed container 12 through the communicating passage from the discharge muffling chamber 64 formed in the lower support member 56. これによって、密閉容器12内は中間圧(前述した8MPaG)となる。 Thus, the sealed container 12 becomes intermediate pressure (8 MPaG described above).
【0029】 [0029]
そして、密閉容器12内の中間圧の冷媒ガスは、スリーブ(図示せず)から出て冷媒導入管92及び上部支持部材54に形成された吸込通路58を経由して吸込ポート161から上シリンダ38の低圧室側に吸入される。 Then, the refrigerant gas of intermediate pressure in the sealed container 12, sleeves on via the suction passage 58 formed out of the (not shown) to the refrigerant introduction pipe 92 and the upper support member 54 from the suction port 161 a cylinder 38 It is sucked in the low pressure chamber side. 吸入された中間圧の冷媒ガスは、ローラ46とベーンの動作により2段目の圧縮が行われて高温高圧(前述した12MPaG)の冷媒ガスとなり、高圧室側から吐出ポートを通り上部支持部材54に形成された吐出消音室62、上シリンダ38、冷媒吐出管96を経由して図示しない外部のガスクーラに流入する。 Refrigerant gas inhaled intermediate pressure roller 46 and operated by the second-stage compression vane is performed become high-temperature high-pressure refrigerant gas (12MPaG described above) through the discharge port from the high pressure chamber side upper support member 54 discharge muffling chamber 62 formed in the upper cylinder 38, and flows to the outside of the gas cooler (not shown) via the refrigerant discharge tube 96.
【0030】 [0030]
ガスクーラに流入した冷媒は、そこで熱交換して空気や水などの加熱の仕事を行った後、膨張弁を経て図示しない蒸発器に流入して蒸発し、冷媒導入管94から第1の回転圧縮要素32内に吸い込まれるサイクルを繰り返す。 The refrigerant flowing into the gas cooler, where it exchanges heat after work heating such as air or water, through the expansion valve evaporates and flows into the evaporator (not shown), the first rotary compression from the refrigerant introduction pipe 94 This cycle is repeated sucked into the element 32.
【0031】 [0031]
このように、第1の回転圧縮要素32の吸込側に冷媒を導入する冷媒導入管94を下シリンダ40に対応して接続し、第2の回転圧縮要素34の吸込側に冷媒を導入する冷媒導入管92を上部支持部材54に対応して接続したので、上下シリンダ38、40に接続される冷媒導入管94、92の間の間隔を広げ、密閉容器12の耐圧強度を確保できるようになる。 Thus, the refrigerant introduction pipe 94 for introducing the refrigerant to the suction side of the first rotary compression element 32 is connected corresponding to the lower cylinder 40, the refrigerant introducing refrigerant into the suction side of the second rotary compression element 34 since the inlet pipe 92 is connected corresponding to the upper support member 54, widening the gap between the refrigerant introduction pipe 94,92 is connected to the upper and lower cylinders 38 and 40, it becomes possible to secure the pressure resistance of the sealed container 12 . また、両冷媒導入管92、94を上部支持部材54及び下部支持部材40に対応して接続する場合に比して回転圧縮機構部18の寸法は縮小されるので、ロータリコンプレッサ10の全体寸法の縮小を図ることが可能となる。 Further, since the dimension of the rotary compression mechanism portion 18 in comparison with the case of connecting both refrigerant introduction pipe 92, 94 in correspondence with the upper support member 54 and lower support member 40 is reduced, the overall size of the rotary compressor 10 it becomes possible to achieve reduction.
【0032】 [0032]
これにより、ロータリコンプレッサ10の軽量化を図ることができ、ロータリコンプレッサ10の運搬、設置などの取り扱いを容易に行うことができるようになる。 Thus, it is possible to reduce the weight of the rotary compressor 10, transportation of the rotary compressor 10, it is possible to easily perform the handling and installation. また、冷媒導入管94を下シリンダ40に対応して接続しているので、第1の支持部材56やマフラーカバー68として通常のものを兼用することができ汎用性を拡大することができる。 Further, since the connecting refrigerant introduction pipe 94 corresponds to the lower cylinder 40, it is possible to expand the versatility can be used also the normal one as the first supporting member 56 and the muffler cover 68. 従って、ロータリコンプレッサ10の構造の簡素化を図ることができて、生産コストの高騰も抑制することができるようになる。 Therefore, it is possible to simplify the structure of the rotary compressor 10, also it is possible to suppress rise in production costs.
【0033】 [0033]
次に、図2にもう一つの本発明のロータリコンプレッサ10を示している。 Next, it shows a rotary compressor 10 of another present invention in FIG. 尚、この図において図1と同一符号は同一若しくは同様の機能を奏するものとする。 Incidentally, the same reference numerals as FIG. 1 in this figure is assumed to achieve the same or similar functions.
【0034】 [0034]
この場合、ロータリコンプレッサ10の上シリンダ38には上シリンダ38の低圧室側に連通する吸込ポート161が形成されると共に、上シリンダ38の上側の開口(中間仕切板36とは反対側の開口)は上部支持部材54にて閉塞される。 In this case, the suction port 161 communicating with the low pressure chamber side of the upper cylinder 38 is formed on the cylinder 38 of the rotary compressor 10, (opening opposite to the intermediate partition plate 36) the upper opening of the upper cylinder 38 It is closed by the upper support member 54. 上部支持部材54には駆動要素14側から凹陥した吐出消音室62が形成され、この吐出消音室62の上側開口は上部カバー66にて閉塞される。 The upper support member 54 the discharge muffling chamber 62 recessed from the driving element 14 side is formed, the upper opening of the discharge muffling chamber 62 is closed by the upper cover 66.
【0035】 [0035]
下部支持部材56には、下シリンダ40に形成された吸込ポート162にて下シリンダ40の内部と連通する吸込通路60と、駆動要素14方向に凹陥した吐出消音室64が形成されると共に、吐出消音室62のシリンダ38とは反対側の開口部が下部カバー68により閉塞される。 The lower support member 56, the suction passage 60 communicating with the interior of the lower cylinder 40 at the suction port 162 formed in the lower cylinder 40, the discharge muffling chamber 64 that is recessed in the driving element 14 direction is formed, the discharge the cylinder 38 of the muffler chamber 62 opening on the opposite side is closed by the lower cover 68. そして、上シリンダ38の吸込ポート161に対応してスリーブ141、冷媒導入管92が接続され、下シリンダ40の内部と連通する吸込通路60に対応してスリーブ142、冷媒導入管94が接続されることになる。 Then, the sleeve 141 corresponding to the suction port 161 of the upper cylinder 38, the refrigerant introduction pipe 92 is connected, the sleeve 142 corresponding to the suction passage 60 communicating with the interior of the lower cylinder 40, is connected to the refrigerant introduction pipe 94 It will be.
【0036】 [0036]
その他の動作は図1の場合と同様である。 Other operations are the same as in FIG. このような構成とした場合にも、冷媒導入管92と94は同様に比較的大きな間隔を存して上下に配置されることになるので、冷媒導入管92と94間の密閉容器12の耐圧強度を確保することができる。 Even when such a configuration, since the refrigerant introduction pipe 92 94 will be disposed vertically to exist similarly relatively large distance, the breakdown voltage of the sealed container 12 between the refrigerant introduction pipe 92 and 94 it is possible to ensure the strength.
【0037】 [0037]
このように、図2の構成では第1の回転圧縮要素32の吸込側に冷媒を導入する冷媒導入管94を下部支持部材56に対応して接続し、第2の回転圧縮要素34の吸込側に冷媒を導入する冷媒導入管92を上シリンダ38に対応して接続しているので、上下シリンダ38、40に接続される冷媒導入管94、92の間の密閉容器12の耐圧強度を確保しながら、ロータリコンプレッサ10の全体寸法の縮小を図ることが可能となる。 Thus, in the configuration of FIG. 2 and connect to corresponding refrigerant introduction pipe 94 for introducing the refrigerant to the suction side of the first rotary compression element 32 to the lower support member 56, the suction side of the second rotary compression element 34 since the refrigerant introduction pipe 92 for introducing the refrigerant are connected in correspondence with the upper cylinder 38, ensuring the pressure strength of the sealed container 12 between the refrigerant introduction pipe 94,92 is connected to the upper and lower cylinders 38 and 40 while, it is possible to achieve a reduction in the overall size of the rotary compressor 10. 従って、ロータリコンプレッサ10の軽量化を図ることができ、運搬、設置などの取り扱いを容易に行うことができるようになる。 Therefore, it is possible to reduce the weight of the rotary compressor 10, transported, it is possible to easily perform the handling and installation.
【0038】 [0038]
尚、実施例では本発明をCO2を冷媒とするロータリコンプレッサ10に用いたが、これに限らず、CO2冷媒以外の他の高低圧差の大きい冷媒が用いられる多段圧縮式ロータリコンプレッサに適用しても本発明は有効である。 Although the CO2 present invention in the embodiment using the rotary compressor 10, the refrigerant is not limited thereto, it is applied to a multi-stage compression type rotary compressor having a large refrigerant other high-low pressure difference of the non-CO2 refrigerant is used the present invention is effective.
【0039】 [0039]
【発明の効果】 【Effect of the invention】
以上詳述した如く本発明によれば、第1及び第2のシリンダに冷媒を導入するための第1及び第2の冷媒導入管相互の間隔を確保し、それらの間の密閉容器の耐圧強度を確保することが可能となる。 According to the present invention as described in detail above, to secure the first and second intervals of the refrigerant introduction pipe cross for introducing the refrigerant into the first and second cylinders, pressure resistance of the sealed container therebetween it is possible to secure. この場合、請求項1の発明では第1の冷媒導入管が第1のシリンダに対応して接続され、請求項2の発明では第2の冷媒導入管が第2のシリンダに対応して接続されるので、第1及び第2の冷媒導入管を第1及び第2の支持部材に対応して接続する場合に比して第1及び第2の回転圧縮要素の全体寸法の拡大を抑え、コンプレッサの小型化を図ることが可能となる。 In this case, in the first aspect of the present invention is connected to the first refrigerant introduction pipe corresponding to the first cylinder, in the invention of claim 2 is connected to a second refrigerant introduction pipe corresponding to the second cylinder Runode suppress the enlargement of the overall dimensions of the first and second rotary compression elements as compared with the case of connecting corresponding first and second refrigerant inlet pipe to the first and second support members, the compressor it is possible to achieve miniaturization.
【0040】 [0040]
特に、請求項1の発明では第1の支持部材として通常のロータリコンプレッサのものを兼用することが可能となり、汎用性に富んだものとなる。 In particular, the invention of claim 1 makes it possible to alternate ones of conventional rotary compressor as the first supporting member, becomes rich in versatility.
【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS
【図1】本発明の実施例のロータリコンプレッサの縦断面図である。 1 is a longitudinal sectional view of a rotary compressor of the embodiment of the present invention.
【図2】もう一つの本発明の実施例のロータリコンプレッサの縦断面図である。 2 is a longitudinal sectional view of a rotary compressor of an embodiment of another present invention.
【符号の説明】 DESCRIPTION OF SYMBOLS
10 ロータリコンプレッサ12 密閉容器14 駆動要素16 回転軸18 回転圧縮機構部32 第1の回転圧縮要素34 第2の回転圧縮要素36 中間仕切板38、40 シリンダ(第2及び第1のシリンダ) 10 rotary compressor 12 sealed container 14 drive element 16 rotation axis 18 to the rotary compression mechanism 32 the first rotary compression element 34 and the second rotary compression element 36 in partition plate 38, 40 cylinders (second and first cylinder)
42 偏心部44 偏心部46 ローラ48 ローラ54 上部支持部材(第2の支持部材) 42 eccentric portion 44 eccentric portion 46 roller 48 roller 54 upper support member (second support member)
56 下部支持部材(第1の支持部材) 56 lower support member (first support member)
62 吐出消音室64 吐出消音室66 上部カバー68 下部カバー92、94 冷媒導入管(第2及び第1の冷媒導入管) 62 the discharge muffling chamber 64 discharge muffling chamber 66 upper cover 68 lower cover 92, 94 a refrigerant inlet pipe (second and first refrigerant introduction tube)
96 冷媒吐出管 96 refrigerant discharge pipe

Claims (2)

  1. 密閉容器内に駆動要素と、該駆動要素にて駆動される第1及び第2の回転圧縮要素を備え、前記第1の回転圧縮要素で圧縮された冷媒を前記密閉容器内に吐出し、更にこの吐出された中間圧の冷媒を前記第2の回転圧縮要素で圧縮する多段圧縮式ロータリコンプレッサにおいて、 A drive element in a sealed container, comprising first and second rotary compression elements driven by the driving element, discharging the refrigerant compressed by the first rotary compression element into the sealed container, further in multi-stage compression type rotary compressor which compresses a refrigerant in the discharged intermediate pressure in the second rotary compression element,
    前記第1及び第2の回転圧縮要素をそれぞれ構成するための第1及び第2のシリンダと、 First and second cylinders for constituting respectively said first and second rotary compression elements,
    これらシリンダ間に介在して前記各回転圧縮要素を仕切ると共に、各回転圧縮要素の一方の開口面を閉塞する中間仕切板と、 With interposed between the cylinders to partition each of said rotary compression element, a partition plate in which closes the one open face of each rotary compression element,
    前記第1のシリンダの他方の開口面を閉塞し、前記駆動要素の回転軸の一方の軸受けを有する第1の支持部材と、 Closing the other opening face of said first cylinder, a first support member having one of the bearing of the rotary shaft of the driving element,
    前記第2のシリンダの他方の開口面を閉塞し、前記駆動要素の回転軸の他方の軸受けを有する第2の支持部材とを備え、 Closing the other opening face of said second cylinder, and a second support member having the other bearing of the rotary shaft of the driving element,
    前記第1の回転圧縮要素の吸込側に冷媒を導入する第1の冷媒導入管を前記第1のシリンダに対応して接続し、前記第2の回転圧縮要素の吸込側に冷媒を導入する第2の冷媒導入管を前記第2の支持部材に対応して接続したことを特徴とする多段圧縮式ロータリコンプレッサ。 Connecting a first refrigerant introduction pipe for introducing the refrigerant to the suction side of the first rotary compression element corresponds to the first cylinder, the first to introduce the refrigerant to the suction side of the second rotary compression element multistage compression rotary compressor, wherein the second refrigerant inlet pipe that is connected in response to the second support member.
  2. 密閉容器内に駆動要素と、該駆動要素にて駆動される第1及び第2の回転圧縮要素を備え、前記第1の回転圧縮要素で圧縮された冷媒を前記密閉容器内に吐出し、更にこの吐出された中間圧の冷媒を前記第2の回転圧縮要素で圧縮する多段圧縮式ロータリコンプレッサにおいて、 A drive element in a sealed container, comprising first and second rotary compression elements driven by the driving element, discharging the refrigerant compressed by the first rotary compression element into the sealed container, further in multi-stage compression type rotary compressor which compresses a refrigerant in the discharged intermediate pressure in the second rotary compression element,
    前記第1及び第2の回転圧縮要素をそれぞれ構成するための第1及び第2のシリンダと、 First and second cylinders for constituting respectively said first and second rotary compression elements,
    これらシリンダ間に介在して前記各回転圧縮要素を仕切ると共に、各回転圧縮要素の一方の開口面を閉塞する中間仕切板と、 With interposed between the cylinders to partition each of said rotary compression element, a partition plate in which closes the one open face of each rotary compression element,
    前記第1のシリンダの他方の開口面を閉塞し、前記駆動要素の回転軸の一方の軸受けを有する第1の支持部材と、 Closing the other opening face of said first cylinder, a first support member having one of the bearing of the rotary shaft of the driving element,
    前記第2のシリンダの他方の開口面を閉塞し、前記駆動要素の回転軸の他方の軸受けを有する第2の支持部材とを備え、 Closing the other opening face of said second cylinder, and a second support member having the other bearing of the rotary shaft of the driving element,
    前記第1の回転圧縮要素の吸込側に冷媒を導入する第1の冷媒導入管を前記第1の支持部材に対応して接続し、前記第2の回転圧縮要素の吸込側に冷媒を導入する第2の冷媒導入管を前記第2のシリンダに対応して接続したことを特徴とする多段圧縮式ロータリコンプレッサ。 Connecting a first refrigerant introduction pipe for introducing the refrigerant to the suction side of the first rotary compression element corresponds to the first support member, for introducing a refrigerant to the suction side of the second rotary compression element multistage compression rotary compressor, characterized in that the second refrigerant inlet pipe is connected corresponding to the second cylinder.
JP2002323244A 2002-11-07 2002-11-07 Multiple stage compression rotary compressor Pending JP2004156539A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002323244A JP2004156539A (en) 2002-11-07 2002-11-07 Multiple stage compression rotary compressor

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP2002323244A JP2004156539A (en) 2002-11-07 2002-11-07 Multiple stage compression rotary compressor
TW92121775A TWI308631B (en) 2002-11-07 2003-08-08 Multistage compression type rotary compressor and cooling device
CN 200310100324 CN1499081A (en) 2002-11-07 2003-10-14 Multistage compression type rotary compressor
EP20030025399 EP1418338B1 (en) 2002-11-07 2003-11-05 Multistage compression type rotary compressor
ES03025399T ES2388274T3 (en) 2002-11-07 2003-11-05 Rotary compressor type multistage compression
EP20070006592 EP1795838A3 (en) 2002-11-07 2003-11-05 Multistage compression type rotary compressor and cooling device
KR20030078422A KR100950412B1 (en) 2002-11-07 2003-11-06 Multi-stage compression type rotary compressor and cooling device
MY138073A MY138073A (en) 2002-11-07 2003-11-06 Multistage compression type rotary compressor and cooling device
US10703261 US6907746B2 (en) 2002-11-07 2003-11-06 Multistage compression type rotary compressor and cooling device
US11009155 US6931866B2 (en) 2002-11-07 2004-12-08 Multistage compression type rotary compressor and cooling device

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JP2004156539A true true JP2004156539A (en) 2004-06-03

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